The Apollonia is a mechanized organ and music machine. It was built in 1926 and resides in the Musical Instrument Museum (Phoeniz, Arizona). It takes up the space of an entire wall

Tech notes: this is a stereo recording made with a Sony PCM-D50 (onboard mics, close XY pattern). I failed to notice that the low-cut filter was engaged on the recorder, so the full bass range of the instrument was not properly captured. You'll need to hear it for yourself in person!